Music-leaf turner



March 31, 1925.

J. J. GIBBS MUSIC LEAF TURNER 7 Filed Sept. 1922 2 Shoots-Sheet 1 WITNESS:

AT ORNEY March 31. 1925.

' J. J. GIBBS MUSIC LEAF TURNER 2 Shah-Sheet 2 Filed Sent. 1922 V m wwi {W64 ja ATTORN EY WITNESS:

Patented Mar. 31, 1925 tries.

JOHN JUNIS GIBBS, OF CAIRO, ILLINOIS.

MUSIC-LEAF TURNER.

Application filed September 1, 1922.

To all whom it may concern.-

Be it known that 1, JOHN J. times, a citizen of the United States, residing at Cairo, in the county of Alexander and State of Illinois, have invented new and useful improvements in Musiclieaf Turners, of which the following is a specification.

This invention relates to a music leaf turner and holder, the general object of the invention being to provide motor actuated arm for turning the leaves and magnetic means for connecting the arm with the leaves.

Another object of the invention is to provide means for energizing the magnetic means when the arm is to turn a leaf.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafterfully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims. I

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 is a front view of the invention showing the same in use upon a piano.

Figure 2 is an enlarged front view of the device.

Figure 3 is a longitudinal sectional view.

Figure 4 is an end view of portion of the device.

Figure 5 is a sectional detail view showing the automatic reversing switch.

Figure 6 is a diagram of the circuits.

Figure 7 is a detail view of one of the stop arms.

In these views, 1 indicates a casing-like frame which is provided with the holders 2 for supporting it at the front of a piano or the like. A small motor 4 is mounted in the frame and this motor drives the vertically arranged shaft 5 by means of the worm gearing 4. An arm 6 is connected with the upper end of the shaft 5 which projects from the frame anda magnet 7 is carried by the outer end of the arm. Tires 8 connect this magnet with the battery 9, a switch 10 being arranged in the circuit of the magnet. Wires 11 connect the motor with the battery and a switch 12 is placed in the circuit of the motor.

Serial No, 585,675.

The motor is a reversible one and a reversing switch 20 is placed in the circuit of the same, the movable part of the switch being mounted on a shaft 21 which is journaled in the frame so that it has rocking movement therein and carries adjacent each end a curved stop arm. One arm 13 is curved upwardly so that when struck by the arm 6 it will rock the shaft 21 in one direction and the other arm is curved downwardly, as shown at 13, so that when struck by the arm 6 it will move the shaft 21 in an opposite direction. Thus each limit of movement of the arm 6 the shaft 21 will be rocked to change the position of the switch 20 so that the movement of the motor will be reversed when the switch 12 is moved to closed position.

Each leaf of the music sheet is adapted to be clamped to a bar 14 which is pivoted to the rod 22 on the front of the frame, by means of a clamp 15, and the outer end of each bar 14 carries a pin 23 which is movably supported and which is attracted by the magnet 8 when the same is energized so that the pin is lifted in the bar 14 and will thus move out of engagement with the latch 24 at each side of the frame. The leaves of the sheet of music are shown at a.

It will thus be seen that the leaves of the sheet of music are fastened to the bars 14 by the latches 15 and the arms 14 are swung to the right in Figure 1 and the parts will be held in this position by the latches 24 at this side of the device engaging the pin 23 of the first arm, the other arms being arranged behind the first arm. Then when a leaf is to he turned the switch 10 is first closed to energize the magnet 7 which will attract the pin of the first arm so as to lift the same above the latch 24 and then the switch 12 is closed to supply current to the motor which will rotate the shaft 5 and thus swing the arm 6 over to the left. The arm 14 will be carried with the arm 6 as its pin is still in engagement with the magnet. As the arm 6 strikes the stop arm at the left of the device it will rock the shaft 21 so as to reverse the switch 20 and thus reverse the motor but as switch 12 is now open the parts will remain in this position. Switch 10 has also been moved to open position to break the circuit to the magnet so that the first arm 14 is free of the arm 6. The

switch 12 is closed before a new page is to be turned so that the arm 6 will be returned to its first position and as it strikes the stop arm at the right hand side of the device the reversible switch will again be turned to reverse the motor again. Then when the second page is to be turned the switch 10 is closed to energize the magnet to attract the pin of the second arm 14- and then the switch 12 is closed to cause the motor to swing the arm 6 hack to the left to turn new page. This action is kept up until the music has been played. If it desired to repeat the page or turn a page back it is simply necessary to close the switch 12 without depressing the switch 10 so that the arm 6 will swing back without carrying with it an arm 14. Then by closing the switch 10 the arm 6 will be engaged with the arm 1-: of the sheet that is to be repeated and then the switch 12 is closed to cause the arm 6 to swing back to its other position. it will thus be seen that the leaves can he turned as desired and the arm 6 can be swung back and forth without moving the arms 14 by keeping the switch 10 open.

The compression of the leaves (1 and of the latches 15 upon each other will act to hold. the pins at the outer end of the latches 2 1 so that they can be picked up by the magnet one at a time.

From the foregoing it will be seen that l: have provided simple means for turning sheet music and the like, the turning arm (5 being motor actuated and said arm operating means to rovers the flow of current to the motor at each end of its movement so that the parts are set for the return movement of the arm upon the closing of the switch 12. The arm is connected with a leaf carrying member by the closing of a switch which supplies current to the magnet carried by the arm.

It is thought from the foregoing description that the advantages and novel features of my invention will be readily apparent.

latch ca l 1e pins when the c. position, circuits for the magnet, controlling switches in inc a reversible switch in the motor circ means actuated by the arm at a: tad of its movement for operating the reversible switch.

fr leaf turning device of the class described comprisin a frame a shaft journaled therein, a reversible motor geared to the shaft, an arm carried by the shaft, a u not on the outer end of the arm leaf engaging members pivoted to a part on the fi me, latch pins carried by said members and adapted to he lifted by the attraction of the magnet, latch means at each one of the frame for engaging the pins when the pins are in lowered position, circuits for the motor and magnet controlling switches in the circuits a reversible switch in the motor circuit, means actuated by the arm at each end of its movement for operating the reversible switch, such means consisting of a shaft on which the movable part of the switch is arranged and a stop member a; each end of the shaft which is stricl: by the arm one member being curved in one direction and the other in an opposite direction.

in testimony whereof I ailiX my signature.

JOHN JUNIS GIBBS. 

